Simple Nervous Systems


Figure 1. Hydra (Left), Nerve net (Middle)


Figure 2. Structure of the statocyst of Goneocnemus

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Figure 3. Aurelia (left), Outer bell margin (Pix 2), Young Aurelia (Pix 3), and sensory structure (Right)

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Human Statocysts

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Figure 4. Cartoon of medusa reacting positively to light, then gravity.

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Turbellarian "Ladder" nervous system and eye structure

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Earthworm nervous system

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Arthropod Nervous Systems

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Vertebrate Spinal Cord Sections

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Yep! These are simple too!



Frog Video (Mouse-over to start) See the lab

Download Real Media Version here
Download AVI version here